/* 文档中心 - 依赖 front-theme.css */
:root {
    /* 布局尺寸（颜色统一走 tokens.css / front-theme.css） */
    --sa-side: 240px;
    --sa-toc: 200px;
    /* 不覆盖 --sa-header：由 sitenav 控制（桌面约 112px / 手机约 56px） */
    --sa-doc-mbar: 0px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.sa-body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--sa-text);
    background: #fff;
    min-height: 100vh;
}

.sa-doc-wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

/* header */
.sa-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--sa-header);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--sa-line);
    backdrop-filter: blur(8px);
}
.sa-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--sa-header);
}
.sa-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--sa-text);
}
.sa-logo img { width: 28px; height: 28px; }
.sa-logo strong { font-size: 16px; letter-spacing: .04em; }
.sa-logo em {
    font-style: normal;
    font-size: 13px;
    color: var(--sa-muted);
    border-left: 1px solid var(--sa-line);
    padding-left: 8px;
    margin-left: 2px;
}
.sa-nav { display: flex; gap: 18px; }
.sa-nav a {
    color: var(--sa-muted);
    text-decoration: none;
    font-size: 14px;
}
.sa-nav a:hover,
.sa-nav a.is-on { color: var(--sa-brand); }

/* home */
.sa-doc-hero {
    background: linear-gradient(180deg, #f3f7ff 0%, #fff 100%);
    border-bottom: 1px solid var(--sa-line);
    padding: 48px 0 36px;
}
.sa-doc-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: 32px;
    align-items: center;
}
.sa-doc-hero-text h1 {
    margin: 0 0 14px;
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
    line-height: 1.25;
}
.sa-doc-hero-text p {
    margin: 0 0 22px;
    color: var(--sa-muted);
    line-height: 1.7;
    font-size: 15px;
}
.sa-doc-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.sa-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 22px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
}
.sa-btn-primary { background: var(--sa-brand); color: #fff; }
.sa-btn-primary:hover { background: var(--sa-brand-hover); color: #fff; }
.sa-btn-hot { background: var(--sa-orange); color: #fff; }
.sa-btn-hot:hover { filter: brightness(.95); color: #fff; }
.sa-btn-ghost { background: #fff; color: var(--sa-brand); border: 1px solid var(--sa-brand-soft-2); }
.sa-btn-ghost:hover { border-color: var(--sa-brand); color: var(--sa-brand-dark); background: var(--sa-brand-soft); }
.sa-doc-hero-visual { text-align: center; }
.sa-doc-hero-visual img { max-width: 100%; height: auto; }

.sa-doc-list { padding: 36px 0 64px; }
.sa-doc-cards {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}
.sa-doc-card {
    display: block;
    background: var(--sa-card);
    border: 1px solid var(--sa-line);
    border-radius: 6px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform .2s ease, box-shadow .2s ease;
}
.sa-doc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(15, 23, 42, .08);
}
.sa-doc-card-cover { height: 140px; background: var(--sa-bg); }
.sa-doc-card-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sa-doc-card-body { padding: 16px; }
.sa-doc-card-body h2 {
    margin: 0 0 8px;
    font-size: 16px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sa-doc-card-body p {
    margin: 0;
    color: var(--sa-muted);
    font-size: 13px;
    line-height: 1.6;
    height: 42px;
    overflow: hidden;
}
.sa-doc-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--sa-muted);
    padding: 48px 0;
}

/* content page */
.sa-doc-page {
    display: grid;
    grid-template-columns: var(--sa-side) minmax(0, 1fr) var(--sa-toc);
    min-height: calc(100vh - var(--sa-header) - 56px);
}
/* 阅读页：三栏高度锁死，仅中间正文滚动，左右目录位置固定不动 */
.sa-doc-page.is-reading {
    height: calc(100vh - var(--sa-header));
    min-height: 0;
    overflow: hidden;
}
.sa-doc-page.is-reading .sa-doc-side,
.sa-doc-page.is-reading .sa-doc-toc {
    position: relative;
    top: auto;
    height: 100%;
    max-height: none;
    overflow: auto;
}
.sa-doc-page.is-reading .sa-doc-main {
    height: 100%;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}
.sa-doc-side {
    border-right: 1px solid var(--sa-line);
    background: #fff;
    padding: 16px 12px 32px;
    position: sticky;
    top: var(--sa-header);
    height: calc(100vh - var(--sa-header));
    overflow: auto;
}
.sa-doc-search { margin-bottom: 12px; }
.sa-doc-side .sa-doc-search input, .sa-doc-search input {
    width: 100%;
    height: 34px;
    border: 1px solid var(--sa-line);
    border-radius: 4px;
    padding: 0 10px;
    margin-bottom: 8px;
    font-size: 13px;
}
.sa-doc-search input:focus {
    outline: none;
    border-color: var(--sa-brand);
    box-shadow: 0 0 0 2px rgba(24, 144, 255, .15);
}
.sa-doc-search-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
    padding: 4px 2px;
    font-size: 12px;
    color: var(--sa-muted);
}
.sa-doc-search-status { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sa-doc-search-nav { display: inline-flex; gap: 4px; }
.sa-doc-search-nav button {
    width: 26px;
    height: 24px;
    border: 1px solid var(--sa-line);
    border-radius: 4px;
    background: #fff;
    color: var(--sa-text);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}
.sa-doc-search-nav button:hover {
    border-color: var(--sa-brand);
    color: var(--sa-brand);
}
mark.sa-doc-mark {
    background: #ffe58f;
    color: inherit;
    padding: 0 1px;
    border-radius: 2px;
}
mark.sa-doc-mark.is-active {
    background: #ffc53d;
    outline: 1px solid var(--sa-brand);
}
.sa-menu, .sa-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
/* 二级目录默认由 .is-open 控制展开；未展开时隐藏 */
.sa-menu .sa-menu,
.sa-menu ul { padding-left: 12px; display: none; }
.sa-menu-dir.is-open > .sa-menu,
.sa-menu-dir.is-open > ul { display: block !important; }
.sa-menu-item > a {
    display: block;
    padding: 7px 10px;
    border-radius: 4px;
    color: #374151;
    text-decoration: none;
    font-size: 14px;
    line-height: 1.4;
}
.sa-menu-item > a:hover { background: #eef5ff; color: var(--sa-brand); }
.sa-menu-item.is-on > a {
    background: #e6f7ff;
    color: var(--sa-brand);
    font-weight: 600;
}
.sa-menu-toggle::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 5px solid #9ca3af;
    margin-right: 8px;
    transition: transform .15s;
}
.sa-menu-dir.is-open > .sa-menu-toggle::before { transform: rotate(90deg); }

.sa-doc-main { padding: 28px 36px 56px; min-width: 0; }
/* 正文阅读区固定最大宽度，避免大图/宽表格撑破布局 */
.sa-doc-article {
    width: 100%;
    /* max-width: 820px; */
    margin: 0 auto;
    box-sizing: border-box;
    overflow-x: hidden;
}
.sa-doc-md {
    line-height: 1.8;
    font-size: 15px;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}
/* 覆盖 cherry-markdown.css 默认灰底 #f8fafb（.cherry / .cherry-previewer） */
.sa-doc-page.is-reading .sa-doc-main,
.sa-doc-page.is-reading .sa-doc-article {
    background: #fff;
}
.sa-doc-md.cherry,
.sa-doc-md .cherry,
.sa-doc-md .cherry-markdown,
.sa-doc-md .cherry-previewer,
#docsHtml,
#docsHtml.cherry,
#docsHtml .cherry,
#docsHtml .cherry-markdown,
#docsHtml .cherry-previewer,
#docsHtml .cherry-flex-inner {
    background: #fff !important;
    background-color: #fff !important;
    box-shadow: none !important;
    border-color: transparent !important;
}
#docsHtml.cherry,
#docsHtml .cherry {
    border: 0 !important;
}
#docsHtml .cherry-previewer {
    border-left: 0 !important;
    padding: 0 !important;
    width: 100% !important;
}
.sa-doc-md h1 { font-size: 28px; margin: 0 0 16px; font-weight: 700; }
.sa-doc-md h2 { font-size: 22px; margin: 28px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--sa-line); font-weight: 650; }
.sa-doc-md h3 { font-size: 18px; margin: 22px 0 10px; font-weight: 600; }
.sa-doc-md h4 { font-size: 16px; margin: 18px 0 8px; font-weight: 600; }
.sa-doc-md h5 { font-size: 15px; margin: 16px 0 8px; font-weight: 600; }
.sa-doc-md p, .sa-doc-md ul, .sa-doc-md ol { margin: .8em 0; }
.sa-doc-md a { color: var(--sa-brand); }
.sa-doc-md img,
.sa-doc-md .cherry-markdown img,
.sa-doc-md .cherry-previewer img,
#docsHtml img,
#docsHtml .cherry-markdown img,
#docsHtml .cherry-previewer img {
    max-width: 100% !important;
    width: auto !important;
    height: auto !important;
    display: block;
    margin: 14px auto;
    border-radius: 6px;
    border: 1px solid var(--sa-line);
    box-sizing: border-box;
    object-fit: contain;
}
.sa-doc-md pre,
.sa-doc-md .cherry-markdown pre,
#docsHtml pre {
    background: #0b1220;
    color: #e5e7eb;
    border-radius: 8px;
    padding: 14px 16px;
    overflow: auto;
    max-width: 100%;
}
.sa-doc-md table,
.sa-doc-md .cherry-markdown table,
#docsHtml table {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    display: block;
    overflow-x: auto;
}
.sa-doc-md th, .sa-doc-md td,
#docsHtml th, #docsHtml td { border: 1px solid var(--sa-line); padding: 8px 10px; }
.sa-doc-md blockquote,
#docsHtml blockquote {
    margin: 14px 0;
    padding: 8px 14px;
    border-left: 4px solid #ddd;
    background: #f9f9f9;
    color: #555;
}

/* 彩色提示条 tip / info / warn / danger（用 !important 压过阅读页去边框/白底规则） */
.sa-doc-callout,
.sa-doc-md .sa-doc-callout,
.sa-doc-md blockquote.sa-doc-callout,
#docsHtml .sa-doc-callout,
#docsHtml blockquote.sa-doc-callout,
#docsHtml .cherry-previewer .sa-doc-callout,
.cherry-markdown .sa-doc-callout,
.cherry-markdown blockquote.sa-doc-callout {
    display: block !important;
    margin: 16px 0 !important;
    padding: 12px 16px 12px 14px !important;
    border-radius: 8px !important;
    border: 1px solid transparent !important;
    border-left-width: 4px !important;
    color: var(--sa-text, #1f2937) !important;
    box-shadow: none !important;
    max-width: 100%;
    box-sizing: border-box;
}
.sa-doc-callout > p,
.sa-doc-callout > ul,
.sa-doc-callout > ol {
    margin: .55em 0;
}
.sa-doc-callout > .sa-doc-callout-title + p { margin-top: 0; }
.sa-doc-callout > p:last-child,
.sa-doc-callout > ul:last-child,
.sa-doc-callout > ol:last-child { margin-bottom: 0; }
.sa-doc-callout-title {
    font-weight: 650 !important;
    font-size: 14px !important;
    line-height: 1.4;
    margin: 0 0 6px !important;
}
.sa-doc-callout.is-tip {
    background: #e6f7ff !important;
    background-color: #e6f7ff !important;
    border-color: #91d5ff !important;
    border-left-color: #1890ff !important;
}
.sa-doc-callout.is-tip .sa-doc-callout-title { color: #096dd9 !important; }
.sa-doc-callout.is-info {
    background: #f0f5ff !important;
    background-color: #f0f5ff !important;
    border-color: #adc6ff !important;
    border-left-color: #2f54eb !important;
}
.sa-doc-callout.is-info .sa-doc-callout-title { color: #1d39c4 !important; }
.sa-doc-callout.is-warn {
    background: #fffbe6 !important;
    background-color: #fffbe6 !important;
    border-color: #ffe58f !important;
    border-left-color: #faad14 !important;
}
.sa-doc-callout.is-warn .sa-doc-callout-title { color: #d48806 !important; }
.sa-doc-callout.is-danger {
    background: #fff2f0 !important;
    background-color: #fff2f0 !important;
    border-color: #ffccc7 !important;
    border-left-color: #ff4d4f !important;
}
.sa-doc-callout.is-danger .sa-doc-callout-title { color: #cf1322 !important; }
.sa-doc-md video,
.sa-doc-md iframe,
#docsHtml video,
#docsHtml iframe {
    max-width: 100% !important;
    height: auto;
}
/* 彻底隐藏标题锚点字符 § */
.sa-doc-md a.anchor,
.cherry-markdown a.anchor {
    display: none !important;
}
.cherry-markdown a.anchor:before {
    content: none !important;
}

.sa-doc-meta {
    margin-top: 28px;
    color: #c2c2c2;
    font-size: 13px;
    display: flex;
    gap: 16px;
}
.sa-doc-pager {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--sa-line);
}
.sa-doc-pager a { color: var(--sa-brand); text-decoration: none; font-size: 14px; }
.sa-doc-related {
    margin-top: 28px;
    padding: 16px 0 0;
    background: transparent;
    border-radius: 0;
    border-top: 1px solid var(--sa-line);
}
.sa-doc-related h3 { margin: 0 0 10px; font-size: 15px; }
.sa-doc-related ul { margin: 0; padding-left: 18px; }
.sa-doc-related li { margin-bottom: 6px; }
.sa-doc-related a { color: #334155; text-decoration: none; }
.sa-doc-related a:hover { color: var(--sa-brand); }
.sa-doc-related .is-empty { color: #999; list-style: none; margin-left: -18px; }

/* 右侧本页目录 */
.sa-doc-toc {
    border-left: 1px solid var(--sa-line);
    padding: 24px 14px;
    position: sticky;
    top: var(--sa-header);
    align-self: start;
    height: calc(100vh - var(--sa-header));
    overflow: auto;
    background: #fff;
    box-sizing: border-box;
}
.sa-doc-toc-title {
    font-size: 12px;
    color: var(--sa-muted);
    margin-bottom: 10px;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.sa-doc-toc a {
    display: block;
    color: #4b5563;
    text-decoration: none;
    font-size: 13px;
    line-height: 1.45;
    padding: 6px 0 6px 10px;
    border-left: 2px solid transparent;
    transition: color .15s ease, border-color .15s ease, background .15s ease;
    border-radius: 0 4px 4px 0;
}
.sa-doc-toc a:hover {
    color: var(--sa-brand);
}
.sa-doc-toc a.is-on {
    color: var(--sa-brand);
    border-left-color: var(--sa-brand);
    background: var(--sa-brand-soft);
    font-weight: 600;
}
.sa-doc-toc .lv-1 { padding-left: 10px; }
.sa-doc-toc .lv-2 { padding-left: 18px; }
.sa-doc-toc .lv-3 { padding-left: 26px; }
.sa-doc-toc .lv-4 { padding-left: 34px; }

.sa-doc-cat-actions { gap: 10px; }
.sa-doc-md blockquote:not(.sa-doc-callout) {
    background: transparent;
}

.sa-doc-search-page { padding: 36px 0 64px; }
.sa-doc-search-page h1 { margin: 0 0 8px; font-size: 26px; }
.sa-doc-search-meta { color: var(--sa-muted); margin-bottom: 20px; }
.sa-doc-search-list { display: grid; gap: 12px; }
.sa-doc-search-item {
    display: block;
    border: 1px solid var(--sa-line);
    border-radius: 8px;
    padding: 16px 18px;
    text-decoration: none;
    color: inherit;
    background: #fff;
}
.sa-doc-search-item h3 { margin: 0 0 6px; font-size: 16px; }
.sa-doc-search-item p { margin: 0; color: var(--sa-muted); font-size: 13px; }

.sa-footer {
    border-top: 1px solid var(--sa-line);
    padding: 16px 0;
    color: var(--sa-muted);
    font-size: 13px;
    background: #fff;
}
.sa-footer .sa-doc-wrap {
    display: flex;
    justify-content: space-between;
}
.sa-footer i { color: #f5222d; font-style: normal; }

/* 移动端顶栏 / 遮罩默认隐藏（桌面） */
.sa-doc-mbar,
.sa-doc-side-mask,
.sa-doc-side-close,
.sa-doc-side-head { display: none; }

@media (max-width: 1100px) {
    .sa-doc-page { grid-template-columns: var(--sa-side) minmax(0, 1fr); }
    .sa-doc-toc { display: none; }
    .sa-doc-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sa-doc-page.is-reading { grid-template-columns: var(--sa-side) minmax(0, 1fr); }
}
@media (max-width: 800px) {
    :root { --sa-doc-mbar: 44px; }
    .sa-nav { display: none; }
    .sa-doc-hero-grid { grid-template-columns: 1fr; }
    .sa-doc-cards { grid-template-columns: 1fr; }
    .sa-doc-page { grid-template-columns: 1fr; }

    /* 阅读页：正文全宽滚动，侧栏抽屉折叠 */
    .sa-doc-page.is-reading {
        display: block;
        height: auto;
        min-height: calc(100vh - 56px);
        overflow: visible;
        padding-top: var(--sa-doc-mbar);
    }
    body.sa-body:has(.sa-doc-page.is-reading) { overflow: auto; }
    body.sa-body.sa-doc-side-open { overflow: hidden; }

    .sa-doc-page.is-reading .sa-doc-main {
        height: auto;
        overflow: visible;
        padding: 16px 16px 48px;
    }
    .sa-doc-page.is-reading .sa-doc-toc { display: none !important; }

    /* 顶栏：紧贴全站导航底部（手机导航固定 56px，不沿用桌面 112px） */
    .sa-doc-mbar {
        display: flex;
        align-items: center;
        gap: 10px;
        position: fixed;
        top: 56px; /* 与 .sn-header 手机高度一致，贴着导航 */
        left: 0;
        right: 0;
        z-index: 90;
        height: var(--sa-doc-mbar);
        padding: 0 12px;
        margin: 0;
        background: #fff;
        border-bottom: 1px solid var(--sa-line);
        box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
    }
    .sa-doc-mbar-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        height: 32px;
        padding: 0 12px;
        border: 1px solid var(--sa-line);
        border-radius: 6px;
        background: #fff;
        color: var(--sa-text);
        font-size: 13px;
        cursor: pointer;
        flex-shrink: 0;
    }
    .sa-doc-mbar-btn:active { background: var(--sa-brand-soft); color: var(--sa-brand); }
    .sa-doc-mbar-title {
        flex: 1;
        min-width: 0;
        font-size: 14px;
        font-weight: 600;
        color: var(--sa-text-title);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* 遮罩 */
    .sa-doc-side-mask {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 110;
        background: rgba(15, 23, 42, 0.45);
    }
    .sa-doc-side-mask[hidden] { display: none !important; }

    /* 左侧目录：默认隐藏，抽屉滑入 */
    .sa-doc-side,
    .sa-doc-page.is-reading .sa-doc-side {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        bottom: 0 !important;
        width: min(86vw, 300px) !important;
        max-width: 300px;
        height: 100% !important;
        max-height: none !important;
        z-index: 120;
        border-right: 1px solid var(--sa-line);
        border-bottom: 0;
        background: #fff;
        padding: 12px 12px 24px;
        overflow: auto;
        -webkit-overflow-scrolling: touch;
        transform: translateX(-105%);
        transition: transform 0.25s ease;
        box-shadow: none;
    }
    .sa-doc-side.is-open,
    .sa-doc-page.is-reading .sa-doc-side.is-open {
        transform: translateX(0);
        box-shadow: 8px 0 32px rgba(15, 23, 42, 0.14);
    }
    .sa-doc-side-head {
        display: flex !important;
        align-items: center;
        justify-content: space-between;
        gap: 8px;
        margin: 0 0 10px;
        padding: 4px 2px 10px;
        border-bottom: 1px solid var(--sa-line-soft);
    }
    .sa-doc-side-head strong {
        font-size: 15px;
        color: var(--sa-text-title);
    }
    .sa-doc-side-close {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        border: 0;
        border-radius: 8px;
        background: var(--sa-bg-soft, #f5f7fa);
        color: var(--sa-muted);
        font-size: 22px;
        line-height: 1;
        cursor: pointer;
    }
    .sa-doc-side-close:active { color: var(--sa-brand); }

    .sa-doc-main { padding: 20px 16px 40px; }
}

.sa-doc-cat-bar { padding: 8px 0 4px; }
.sa-doc-cat-actions { display:flex; flex-wrap:wrap; gap:8px; margin: 12px 0 4px; }